Vol. [11-14] called Proceedings of the Royal Irish Academy. 2nd series, v. 1-4, Science; v. [15-16] called: Proceedings of the Royal Irish Academy, 2nd series, v. 1-2, Polite literature and antiquities. Vols. [17-23] called 3rd series, v. 1-7. Continuous vol. numbering resumes with v. 24
Vols. 24- issued in 3 sections: Section A, Mathematical, astronomical and physical sciences; Section B, Biological, geological and chemical science; Section C, Archaeology, linguistic and literature